+ updating lodash to 2.0.0 <unreleased as of yet>

(Use `npm install 'lodash/lodash#2.0.0'`.)
+ typo
+ making genrated-bits successfully callable
+ .last doesn't exist 'cause life sucks dick
+ it's a subtle distinction, I know ...
+ abstracting out a noisy bit of the bits-tests
+ FAILING for single-call upon exhaustion of bits